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L-Theanine 200 mg

product on market Softgel Capsule SportsResearch Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 100% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · grounded in 1 source · methodology

L-theanine is supported by strong evidence for its ability to promote relaxation and reduce stress without causing sedation. Research indicates it may improve cognitive focus and attention when used independently or with caffeine. The ingredient is generally recognized as safe for consumption.

AI-generated summary based on research evidence. Not medical advice.

Label

Product Label

Label for L-Theanine 200 mg
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Softgel(s)
Serving Size
60
Servings
Non-Nutrient/Non-Botanical
Product Type
100%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

200 mg
Market median: 200.0mg (358 products) 9 studies (A:0, B:2)

Other Ingredients

Organic Virgin Coconut Oil Beeswax kosher Gelatin non-GMO Vegetable Glycerin purified Water
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested Use: As a dietary supplement, healthy adults take 1 liquid softgel daily with or without food. Best when taken as directed by a qualified healthcare professional.

Warnings & Precautions

Contains: Tree Nuts (Coconut).

Caution: Keep out of reach of children and pets.

Caution: Keep out of reach of children and pets.

Consult with a qualified healthcare professional prior to using this product, especially if you are pregnant, nursing, have diagnosed medical conditions, or are taking prescription medications.

Do not exceed recommended daily intake. Do not use if safety seals is damaged or missing.

Formulation Notes

SR L-theanine featuring Suntheanine is a premium, Non-GMO form of L-theanine that may help support an alert state of relaxation without drowsiness. Formulated with Coconut Oil

Supports Relaxation & Focus IGEN Non-GMO Tested

Manufactured and Quality tested in USA. Ingredients carefully sourced from around the world.

Relaxation & Focus

Made with Suntheanine and coconut oil

Made with Non-GMO Ingredients Gluten Free

Good Manufacturing Practice cGMP Compliant

Not manufactured with: milk, eggs, fish, crustacean shellfish, peanuts, wheat, soy or gluten.

Produced in a third-party, audited and registered cGMP compliant facility that may process other products that contain these allergens or ingredients.

Additional Information

Satisfaction Guarantee We offer a full refund on the purchase price of your order (minus return cost) within 90 days of purchase. Restrictions apply. Please visit sportsresearch.com for full details.

Track your lot number, and view third party independent testing. Sportsresearch.com

IGEN Informed Non-GMO choices www.igenprogram.com 3rd party quality testing

Store at room temperature, in a dry place. Protect product from excessive heat, freezing, humidity and light.

Metadata

Product Details

UPC / SKU0 23249 01017 3
DSLD Entry Date2022-04-11
Product TypeNon-Nutrient/Non-Botanical
FormSoftgel Capsule
BrandSportsResearch
DSLD ID267648
Data Updated2026-04-11
Research

Research Evidence

37
Research Sources
53
Avg Quality
22
Rct
10
Systematic Review
3
Meta Analysis
1
Clinical Trial
1
Openfda Safety
B Examining the effect of L-theanine on sleep: a systematic review of dietary supplementation trials
Systematic Review Nutritional neuroscience 2026 PubMed DOI
B The effects of L-theanine consumption on sleep outcomes: A systematic review and meta-analysis
Meta Analysis Sleep medicine reviews 2025 PubMed DOI
B The combination of L-theanine and caffeine improves cognitive performance and increases subjective alertness
Rct Nutritional neuroscience 2010 PubMed DOI
B Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial
Rct Nutrients 2019 PubMed DOI
B The Role of Supplements and Over-the-Counter Products to Improve Sleep in Children: A Systematic Review
Systematic Review International journal of molecular sciences 2023 PubMed DOI
B Effects of Tea (Camellia sinensis) or its Bioactive Compounds l-Theanine or l-Theanine plus Caffeine on Cognition, Sleep, and Mood in Healthy Participants: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
Meta Analysis Nutrition reviews 2025 PubMed DOI
B Effect of Alpha-S1-Casein Tryptic Hydrolysate and L-Theanine on Poor Sleep Quality: A Double Blind, Randomized Placebo-Controlled Crossover Trial
Rct Nutrients 2022 PubMed DOI
B Effect of L-theanine on selective attention in a traffic-related reaction task in sleep-deprived young adults: a double-blind placebo-controlled, crossover study
Rct Nutritional neuroscience 2025 PubMed DOI
B The combined effects of L-theanine and caffeine on cognitive performance and mood
Rct Nutritional neuroscience 2008 PubMed DOI
B Acute effects of tea constituents L-theanine, caffeine, and epigallocatechin gallate on cognitive function and mood: a systematic review and meta-analysis
Meta Analysis Nutrition reviews 2014 PubMed DOI
View all evidence for L Theanine →
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.